DK2628874T3

DK2628874T3 - closing Cylinder

Info

Publication number: DK2628874T3
Application number: DK13154438.9T
Authority: DK
Original assignee: Bremicker Soehne Kg A
Priority date: 2012-02-17
Filing date: 2013-02-07
Publication date: 2018-11-12
Also published as: DE102012003168A1; ES2701757T3; EP2628874B1; EP2628874A2; EP2628874A3

Description

The present invention relates to a lock cylinder comprising two housing parts which are connected to one another at a variable spacing via an elongate coupling element, wherein the coupling element is held in receivers of the housing parts which extend along the longitudinal axis of the lock cylinder. A lock cylinder of this kind, such as is, for example, described in EP 1 802 831 B1, is inserted into a mortise lock of a door in accordance with its intended purpose and is fixed there by means of a forend screw to enable a locking actuation or unlocking actuation at the latching mechanism of the mortise lock by means of an associated key. A lock cylinder of this category can, for example, be configured as a double cylinder such as is described in EP 1 802 831 B1, wherein a respective key-actuated cylinder core is provided in both housing parts. The rotary actuation of a core is typically transmitted via a coupling to a lock bit which cooperates with the latching mechanism of the mortise lock. A lock cylinder in accordance with the preamble of claim 1 is also known from the document AT 394605.

The invention, however, also relates to a lock cylinder which is configured as a knob cylinder and in which a key-actuated cylinder core is only arranged in one housing part, whereas a shaft, also called a knob insert, is arranged in the other housing part and is rotationally fixedly connected to an associated door knob. In such a knob cylinder, the latching mechanism of the mortise lock can take place both by a key-actuated rotation of the cylinder core (at the outer side of the door) and by a rotary actuation of the knob (at the inner side of the door). The basic design of a knob cylinder is described in DE 10 2010 022 275 A1, for example.

In both lock cylinder types, both their construction length and the position of the lock bit with respect to the longitudinal axis of the lock cylinder can vary due to different door strengths and varying installation positions of the mortise lock. To avoid a complex and/or expensive storage of lock cylinder variants of different lengths and to simplify the manufacture, EP 1 802 831 B1 proposes a modular lock cylinder in which the two housing parts are connected to one another at a variable spacing via an elongate coupling element. The coupling element is received in a form-fitting manner in groove-shaped receivers of the housing parts in a selectable axial position and is secured with the aid of securing clamps. However, a specific number of individual parts have to be handled for an assembly of such a lock cylinder, which can be difficult for an unexperienced user on the final assembly which typically only takes place at the construction site.

It is therefore the object of the invention to provide an improved lock cylinder of the initially named kind.

The object is satisfied by the features of claim 1 and in particular in that the coupling element is adjustable by rotation about its longitudinal axis between a fixed position in which the coupling element is axially fixed in the receivers and an alignment position in which the coupling element is axially displaceably received in the receivers. The lock cylinder in accordance with the invention is characterized by its simple assembly capability and alignment capability. In the alignment position, the spacing of the housing parts can be varied within the framework of a length range predefined at the manufacturer's. As soon as the desired spacing between the two housing parts has been set, the coupling element can be axially fixed in the receivers by a simple rotation about its longitudinal axis, wherein the lock cylinder is, for example, configured such that an angle of rotation of approximately 90° is required for this purpose. A handling of securing rings or the like is just as unnecessary as the use of special tools. The final assembly and/or the alignment of the lock cylinder is/are thereby considerably simplified.

Whenever indications of direction (e.g. "transverse" or "axial") are named in connection with the invention, they generally relate to the longitudinal axis of the lock cylinder. Said receiver of the respective housing part generally designates the structure of the housing part or at the housing part (e.g. as a separate securing pin and/or as a separate sleeve) which defines the required opening for the engagement of the elongate coupling element.

In accordance with a preferred embodiment, the coupling element and the respective receiver engage behind one another in a form-fitting manner in the fixed position of the coupling element, but not in the alignment position of the coupling element. A stable connection of the two housing parts is thereby ensured in the fixed position.

The coupling element and the respective receiver preferably engage behind one another in the fixed position of the coupling element in accordance with a predetermined adjustment pattern. The dimension of the adjustment pattern can, for example, amount to 5 mm. A simple length setting for adaptation to different mortise lock types and door strengths, which are usually likewise produced in accordance with the adjustment pattern, is thereby ensured.

In accordance with a further advantageous embodiment, the coupling element has a plurality of transversely extending, axially spaced apart securing recesses, wherein each of the receivers has at least one securing projection, with the securing projection being in engagement with one of the securing recesses in the fixed position of the coupling element. Said securing projection can in particular be transversely oriented. The variable adjustability of the lock cylinder can hereby be implemented in a particularly simple manner. The adjustment pattern for the length adjustability can be predefined by the spacing of the securing recesses. In accordance with a particularly simple embodiment, only one single securing projection is provided in the respective receiver. To increase the strength of the connection between the coupling element and the housing parts, a plurality of securing projections can, however, also be provided in the respective receiver. The securing projections can be arranged opposite one another viewed in the transverse direction and/or can be arranged axially spaced apart from one another along the longitudinal axis of the lock cylinder.

In accordance with an advantageous further development, said securing projection is integrally formed at the respective housing part. However, the securing projection is preferably formed by a part section of a securing element extending through the respective receiver in a transverse direction. The securing element can, for example, be configured as a securing pin or as a securing plate. Such a configuration of the securing projection can be implemented in a simple manner in a technical production respect.

The securing element is preferably releasably or fixedly arranged in a securing element cut-out provided in the respective housing part. The securing element can be mortised into the securing element cut-out, that is it can be held in the securing element cut-out by clamping. In a securing element configured as a securing pin, it is, however, also possible to provide the securing pin and the securing element cut-out configured as a securing pin bore with a respective thread such that the securing pin can be screwed into the securing bore.

In accordance with a preferred further development, the securing element cut-out extends in parallel with housing pin bores provided in the respective housing part. The production process is hereby simplified even further. Machines for the manufacture of lock cylinders as a rule have apparatus for introducing housing pin bores for pin tumblers which can also be used for the manufacture of the securing element cut-out. No special modifications therefore have to be carried out at the machines. The housing part in particular only has to be laterally offset, but not rotated, during the processing. The securing element cut-out can generally, however, also be arranged at a different angle with respect to the housing pin bores, for example offset by 90°.

In accordance with a further advantageous further development, the respective section of the coupling element held in the receivers has the basic shape of a cylinder comprising a flattened portion which extends in the axial direction, with the plurality of securing recesses being offset in an angular direction (i.e. in the peripheral direction) with respect to the flattened portion and merging into the flattened portion. The transition between the flattened portion and the securing recesses enables the rotation of the coupling element in the receivers.

The receivers preferably essentially have a circular cross-section corresponding to the maximum cross-section of the coupling element, with a cross-sectional reduction of the receiver caused by the securing projection corresponding to a cross-sectional reduction caused by the flattened portion of the coupling element. In the alignment position of the coupling element, the flattened portion of the coupling element is aligned with the securing projection of the respective receiver such that the coupling element can be led past the securing projection without the securing projection being able to engage into one of the securing recesses. The amount of the cross-sectional reduction caused by the flattened portion and the dimensions of the securing projection are preferably selected such that the largest possible strength of the connection between the coupling element and the housing part is ensured.

In the above-explained embodiment, the coupling element has a plurality of transversely extending securing recesses, wherein each of the receivers has at least one securing projection. Alternatively to this, it is generally also possible to provide the arrangement of the securing recesses and securing projections in a reverse manner. In this alternative embodiment, each of the receivers has a plurality of transversely extending, axially spaced apart securing recesses, wherein the coupling element has at least one securing projection (in particular only one single securing projection), and wherein the securing projection is in engagement with one of the securing recesses of the respective receiver in the fixed position of the coupling element.

In this alternative embodiment, the above-explained further developments can be provided in a corresponding manner. Said securing projection of the coupling element can, for example, be transversely oriented. The securing recesses of the respective receiver can be formed by the gaps between a plurality of axially spaced apart securing elements (e.g. securing pins) extending through the respective receiver in the transverse direction. The respective section of the coupling element held in the receivers can also have a flattened portion extending in the axial direction in this embodiment, with the at least one securing projection of the coupling element being offset in an angular direction with respect to the flattened portion. The securing projection can in particular form a hook-like lateral protrusion with respect to a further flattened portion of the coupling element.

The receivers for the coupling element are preferably provided in a flange section of the respective housing part in which the housing pins of pin tumblers are typically also arranged. The receivers are preferably peripherally closed in this respect.

At least one of the receivers is preferably formed by a sleeve which is received in a bore of the respective flange section. Such a configuration has proved to be particularly advantageous in a technical production aspect since the flange section can first be provided with housing pin bores which extend continuously between the cylinder core bore and the lower side of the flange section and which serve for the reception of housing pins and associated housing springs. The sleeve is then pushed into the axial bore of the flange section after the equipping of the housing pin bores with housing pins and housing springs has been carried out and the outer periphery of said sleeve serves as a support for the housing springs. A basic modification of existing production machines and processes is thus not required. The sleeve can additionally be penetrated by the already mentioned securing element (e.g. securing pin) which thus likewise forms a section of the respective receiver.

The coupling element can comprise a center section and two arms which adjoin it and which engage into the receivers of the housing parts. The center section can serve as an abutment for the housing parts or for associated extension parts to fix the maximum penetration depth of the arms into the respective receiver.

In accordance with a further preferred embodiment, the coupling element has a threaded bore in a center section or in said center section, said threaded bore being oriented such that a forend screw associated with the lock cylinder can be screwed into the threaded bore in the fixed position of the coupling element. After the assembly of the lock cylinder in a mortise lock has taken place, the screwed-in forend screw not only serves for an axial fixing of the lock cylinder in the mortise lock, but simultaneously secures the coupling element in its fixed position since a rotation into the alignment position is prevented by the forend screw. A forend screw which is temporarily screwed into the threaded bore for the assembly and/or alignment of the lock cylinder can additionally serve as an additional lever on the rotation of the coupling element between the alignment position and the fixed position.

To ensure a sufficient strength, the coupling element can have a cross-sectional extension in the region of the threaded bore, i.e. in said center section. The coupling element including the center section can be formed in one part.

Further advantageous embodiments of the invention are set forth in the dependent claims, in the description and in the drawings.

The invention will be explained in the following by way of example with reference to the drawings. There are shown:

Fig. 1 a perspective view of a lock cylinder in accordance with the invention;

Fig. 2 a perspective view of the lock cylinder of Fig. 1 in an exploded representation;

Fig. 3 a cross-section of the lock cylinder of Fig. 1;

Fig. 4 a longitudinal section of the lock cylinder of Fig. 1; and

Fig. 5 a perspective view of a coupling element of the lock cylinder of Fig. 1. A lock cylinder 10 in accordance with the invention which is configured as a knob cylinder in the present embodiment comprises, in accordance with Figs. 1 to 4, two housing parts 12 which are of the same construction and which are connected to one another at a variable spacing via an elongate coupling element 14.

The housing parts 12 each have a cylinder core bore or an axial bore 24 in which a cylinder core 16 is received in the one housing part 12 and a shaft 18 is received in the other housing part 12. A lock bit 20 for actuating a latching mechanism of a mortise lock (not shown) is fastened to the shaft 18 in a variable axial position. A knob 22 for a rotary actuation of the shaft 18 is fastened to the free end of the shaft 18. The length of a shaft mount 23 provided in the interior of the knob 22 is selected such that length differences of the section of the shaft 18 projecting into the shaft mount 23 which are caused by different spacings of the housing parts 12 can be compensated.

Both the cylinder core 16 and the shaft 18 have a ring groove 44 and 46 respectively at an end section, said ring grooves serving for the reception of securing rings (not shown) with whose aid the cylinder core 16 or the shaft 18 can be fixed in their axial positions in cooperation with slits 48 formed at the housing parts 12 in the region of the axial bores 24. The shaft 18 is in particular hereby axially fixed at the housing part 12 at the outer side of the door.

The securing of the knob 22 and/or of the lock bit 20 at the shaft 18 can take place in a manner known per se by suitable means such as grub screws or the like.

The cylinder core 16 can be coupled to the shaft 18 in a manner known per se which is not shown here. Such a coupling is described in DE 10 2010 022 275 A1, for example.

Each housing part 12 furthermore has a flange section 26 in which a bore 28 is introduced which is formed as a blind hole in an embodiment and which extends in parallel with the axial bore 24. A respective sleeve 30 which forms a receiver 32 for a respective introduction section 33 of the coupling element 14 is received in each bore 28.

As can in particular also be easily recognized in Fig. 3, each flange section 26 has a securing element cut-out in the form of a securing pin bore 35 which extends transversely to the bore 28 and tangentially through a corresponding bore of the sleeve 30 and thus through the receiver 32. A securing element in the form of a securing pin 34 is mortised into the securing pin bore 35, wherein a part section of the securing pin 34 projecting into the sleeve 30 forms a securing projection and thus defines a cross-sectional reduction of the receiver 32. Each housing part 12 furthermore has a plurality of housing pin bores 36 which are introduced at the lower side of the flange section 26 and which extend in parallel with the securing pin bore 35.

The coupling element 14 has the basic shape of a cylinder, wherein a center section 38 of the coupling element 14 forms a cross-sectional extension and has a threaded bore 40. The two named introduction sections 33 of the coupling element 14 thus adjoin the center section 38 as arms. A plurality of transversely extending securing recesses 42 axially spaced apart with a grid dimension of 5 mm, for example, are provided at both sides of the center section 38 at the introduction sections 33 of the coupling element 14, with a respective one of said securing recesses being in engagement with the securing projection, that is with the part section of the respective securing pin 34 (Fig. 3) extending through the sleeve 30, in dependence on the selected spacing of the housing parts 12.

As can in particular be easily recognized in Fig. 3, each of the introduction sections 33 of the coupling element 14 has a flattened portion 50 which extends in the axial direction and which is offset by an angle of approximately 90° with respect to the securing recesses 42. The securing recesses 42 merge into the flattened portion 50 such that a rotational movement of the coupling element 14 is not impeded by the securing pin 34. As can in particular be recognized in Fig. 5, the flattened portions 50 are offset by 180° from one another with respect to the design of the housing parts 12 as identical in construction (asymmetrical arrangement of the securing pins 34).

To move the coupling element 14 from its fixed position, such as is shown in Figs. 1 to 4, into its alignment position, the coupling element 14 has to be rotated counterclockwise by 90° - with respect to Fig. 3 - which is indicated by the arrow in Fig. 3. The respective flattened portion 50 is thus aligned with respect to the associated securing pin 34 in the alignment position such that the coupling element 14 can be displaced in the receivers 32 in the axial direction. As soon as the desired spacing between the housing parts 12 and/or the desired relative position of the threaded bore 40 with respect to the housing parts 12 has been set, the coupling element 14 can be rotated back into the fixed position.

The threaded bore 40 in the center section 38 extends radially to the longitudinal axis of the coupling element 14 and serves for the reception of a forend screw for securing the lock cylinder 10 in a mortise lock (not shown). Since the threaded bore 40 is only correctly oriented for the reception of the forend screw in the fixed position of the lock cylinder 10 (see Fig. 1), it is ensured that the coupling element 14 always has to be moved completely into the fixed position before an assembly can take place in the mortise lock and that said coupling element is fixed in the fixed position after the assembly.

In accordance with a modification, the above-explained lock cylinder 10 can also be configured as a double cylinder. A second cylinder core 16 (not shown) is provided instead of the shaft 18 and the knob 22, wherein a suitable device for length compensation and respective couplings for coupling the cylinder cores 16 to the lock bit 20 are to be provided between the two cylinder cores 16.

In both cases (knob cylinder and double cylinder), a connection part (not shown) can be provided between the respective housing part 12 and the center section 38 of the coupling element 14 if the respective introduction section 33 of the coupling element 14 does not completely engage into the associated receiver 32. Such a connection part therefore serves as a filling piece and it can have a cross-section which corresponds to the cross-section of the adjacent housing part 12 (Fig. 3).

Reference numeral list 10 lock cylinder 12 housing part 14 coupling element 16 cylinder core 18 shaft 20 lock bit 22 knob 23 shaft mount 24 axial bore 26 flange section 28 bore 30 sleeve 32 receiver 33 introduction section 34 securing pin 35 securing pin bore 36 housing pin bore 38 center section 40 threaded bore 42 securing recess 44, 46 ring groove 48 slit 50 flattened portion

Claims

A closure cylinder with two housing parts (12) which are connected to each other via an elongated variable spacer element (14), the clutch element (14) being retained in receptacles (32) in the housing parts (12) running along the closure cylinder (10). longitudinal axis, characterized in that the coupling element (14) can be adjusted via rotation about its longitudinal axis between a locking position in which the coupling element (14) is axially locked in the receptacles (32) and an adjustment position in which the coupling element (14) is accommodated axially displaceable in the receptacles (32).

Closure cylinder according to claim 1, characterized in that the coupling element (14) and the respective receptacle (32) in the locking position of the coupling element (14), but not in the adjustment position of the coupling element (14), engage one another from behind.

Closure cylinder according to claim 1 or 2, characterized in that the coupling element (14) and the respective receptacle (32) in the locking position of the coupling element (14) engage one another from behind according to predetermined setting steps.

Closure cylinder according to one of the preceding claims, characterized in that the coupling element (14) has a plurality of axially spaced transverse safety recesses (42) and each of the receptacles (32) has at least one fuse protrusion, the fuse protrusion in the locking position of the coupling element (14). is in engagement with one of the recesses (42).

Closure cylinder according to claim 4, characterized in that the securing projection is constituted by a sub-section of a securing element (34) extending transversely through the respective receptacle (32).

Closure cylinder according to claim 5, characterized in that the securing element (34) is removably or fixedly mounted in a securing element recess (35) provided in each housing part (12).

Closure cylinder according to claim 6, characterized in that the locking element recess (35) runs parallel to housing pin bores (36) provided in each housing part (12).

Closure cylinder according to one of claims 4 to 7, characterized in that the respective sections of the coupling element (14) held in the receptacles (32) have a basic shape of a cylinder with a discharge (50) extending in the axial direction, the plurality of the fuse recesses (32) relative to the discharge (50) is obliquely offset and continues into the discharge (50).

Closure cylinder according to claim 8, characterized in that the receptacles (32) have substantially a circular cross-section corresponding to the maximum cross-section of the coupling element (14), a cross-sectional reduction of the receptacle (32) corresponding to a cross-sectional reduction corresponding to a cross-sectional reduction. due to the discharge (50) of the coupling element (14).

Closure cylinder according to one of the preceding claims, characterized in that the receptacles (32) for the coupling element (14) are provided in a flange section (26) on the respective housing part (12).

Closure cylinder according to claim 10, characterized in that at least one of the receptacles (32) is constituted by a sleeve (30), which is received in a bore (28) on the respective flange section (26).

Closure cylinder according to one of the preceding claims, characterized in that the coupling element (14) in a central section (38) has a threaded bore (40) which is positioned so that in the locking position of the coupling element (14) a packing screw can be turned into the threaded bore (40) which fits the closure cylinder (10).